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MAX6349TP Datasheet(PDF) 7 Page - Maxim Integrated Products

Part # MAX6349TP
Description  150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX6349TP Datasheet(HTML) 7 Page - Maxim Integrated Products

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150mA, SOT23, Low Dropout Linear Regulators
with Internal Microprocessor Reset Circuit
_______________________________________________________________________________________
7
5% reset: Reset does not assert until the regulator out-
put voltage is at least -5% out of tolerance and always
asserts before the regulator output voltage is -10% out of
tolerance.
10% reset: Reset does not assert until the regulator
output voltage is at least -10% out of tolerance and
always asserts before the regulator output voltage is
-15% out of tolerance.
Reset Output
A µP’s reset input starts the µP in a known state. The
MAX6329/MAX6349 µP supervisory circuits assert a
reset during power-up, power-down, and brownout
conditions. Reset is guaranteed to be logic high or low
depending on the device chosen (see Selector Guide).
RESET or RESET asserts when VOUT is below the reset
threshold and for at least 100ms (tRP) after VOUT rises
above the reset threshold. RESET or RESET also
asserts when MR is low (MAX6349).
Shutdown (MAX6329 Only)
SHDN allows for the regulator to shutdown thereby
reducing the total IIN consumption of the device. The
MAX6329 provides a digitally controlled active-low
shutdown function. In shutdown mode the pass transis-
tor, control circuit, reference, and all biases turn off,
reducing the supply current to below 1µA. Connect
SHDN to IN for normal operation.
Manual Reset Input (MAX6349 Only)
Many µP-based products require manual reset capabil-
ity, allowing the operator, a test technician, or external
logic circuitry to initiate a reset. For the MAX6349, a
Figure 2. Functional Diagram
REVERSE
LEAKAGE
PROTECTION
THERMAL SENSOR
MOS DRIVER WITH
CURRENT LIMIT
1.23V
60mV
OUTPUT
STAGE
200ms
RESET
DELAY
RESET
COMPARATOR
GND
MR
FEEDBACK MODE
COMPARATOR
ERROR
AMP
IN
SHDN
OUT
SET
RESET/RESET


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